Flights are bookable in the NokAir system now. Less than 2000baht return and seems to be for any day out and back
Excellent timings too for a quick run staying one night in HatYai.
Nok Air - Flight Schedule
Phuket - Hat Yai
Availability Flight Depart Arrive
Daily
DD7624
14:05
14:45
Hat Yai - Phuket
Availability Flight Depart Arrive
Daily
DD7625
15:15
15:55
DEPARTURE
1 Fare (ADULT) THB 340.18
1 Tax, Fee and Surcharge (ADULT) THB 658.81
Airport Tax THB 100.00
Insurance THB 50.00
Administration Fee THB 50.00
Fuel Surcharge THB 400.00
VAT THB 58.81
Total (ADULT) THB 998.99
DEPARTURE TOTAL THB 998.99
RETURN
1 Fare (ADULT) THB 340.18
1 Tax, Fee and Surcharge (ADULT) THB 658.81
Airport Tax THB 100.00
Insurance THB 50.00
Administration Fee THB 50.00
Fuel Surcharge THB 400.00
VAT THB 58.81
Total (ADULT) THB 998.99
RETURN TOTAL THB 998.99
ATM1.4 THB 20.00
Counter Service Plus2.1 THB 30.00
TRIP TOTAL THB 1,997.99